It is possible to avoid having to buy the coils by instead
winding your own coils. You can very eaisly get inductances that
range from 1 uH to 50 uH with this very simple method and using
an air core. Below you see examples with 18 gauge wire and 20
gauge wire. The 75 turns of 18 gauge wire make a 16 uH inductor.
The 100 turns of 20 gauge wire makes a 35 uH inductor. The core
is air, but is filled with hot melt glue which is about the same
as air as far as the inductor is conserned.

The author of this page is not responsible
for any damages caused by someone following the procedures listed
above.
This page is presented for entertainment purposes only. All claims
are made from experience and are not necessarily fact.
Various trademarks on items are the property of their respective
owners.
Send comments or corrections to: Jeff
Mucha